HelloWorld Example Documentation Bugs

[poetinger]

The code samples for the Hello World Keys Steps (also a typo) are not visible in 2/3 of the available themes. While they are not the prettiest on other pages, they are at least visible.

https://cyclonedds.io/docs/cyclonedds/latest/getting_started/helloworld/helloworld_key_steps.html

[bradleeharr]

The color for the entire body is seems to be set to a default font color --fontColor, which is white. This is fine for the article body text, which has the grey background but since the background of the code sample window is white, so they don't show up.

The background color could be changed, or the font color could be changed.

I'm not sure where the website data source is held, so I'm not sure where this edit would be added